A new n-type semiconducting molecule with an asymmetric indenothiophene core for a high-performing non-fullerene type organic solar cell

Young Un Kim; Gi Eun Park; Suna Choi; Dae Hee Lee; Min Ju Cho; Dong Hoon Choi

doi:10.1039/c7tc00706j

A new n-type semiconducting molecule with an asymmetric indenothiophene core for a high-performing non-fullerene type organic solar cell

Young Un Kim, Gi Eun Park, Suna Choi, Dae Hee Lee, Min Ju Cho, Dong Hoon Choi

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

Herein, a new asymmetric n-type semiconducting molecule (PhITBD) with an indenothiophene core was designed, synthesized using tethering 2-(benzo[c][1,2,5]-thiadiazol-4-ylmethylene)-malononitrile (BM) as terminal groups, and applied to polymer solar cells (PSCs). The PSCs with asymmetric PhITBD displayed improved power conversion efficiencies (PCE) of 6.57% as compared to those with the symmetric molecule IDT-2BM. The higher PCE value of the PhITBD-based PSC was mainly attributed to the enhanced photovoltaic properties, the V_oc, J_sc, FF induced by complementary light absorption (550-600 nm range), morphological improvement, and balanced charge carrier transport in the active layer. Due to the effective morphological control and absorption enhancement, asymmetric structured n-type-conjugated molecules are potential candidates for improving the performance of bulk heterojunction non-fullerene type PSCs.

Original language	English
Pages (from-to)	7182-7190
Number of pages	9
Journal	Journal of Materials Chemistry C
Volume	5
Issue number	29
DOIs	https://doi.org/10.1039/c7tc00706j
Publication status	Published - 2017

ASJC Scopus subject areas

Chemistry(all)
Materials Chemistry

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10.1039/c7tc00706j

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@article{edd5f6f7f4354d509a4426d5908cc40e,

title = "A new n-type semiconducting molecule with an asymmetric indenothiophene core for a high-performing non-fullerene type organic solar cell",

abstract = "Herein, a new asymmetric n-type semiconducting molecule (PhITBD) with an indenothiophene core was designed, synthesized using tethering 2-(benzo[c][1,2,5]-thiadiazol-4-ylmethylene)-malononitrile (BM) as terminal groups, and applied to polymer solar cells (PSCs). The PSCs with asymmetric PhITBD displayed improved power conversion efficiencies (PCE) of 6.57% as compared to those with the symmetric molecule IDT-2BM. The higher PCE value of the PhITBD-based PSC was mainly attributed to the enhanced photovoltaic properties, the Voc, Jsc, FF induced by complementary light absorption (550-600 nm range), morphological improvement, and balanced charge carrier transport in the active layer. Due to the effective morphological control and absorption enhancement, asymmetric structured n-type-conjugated molecules are potential candidates for improving the performance of bulk heterojunction non-fullerene type PSCs.",

author = "{Un Kim}, Young and {Eun Park}, Gi and Suna Choi and {Hee Lee}, Dae and {Ju Cho}, Min and Choi, {Dong Hoon}",

note = "Funding Information: The authors acknowledge the financial support received from the National Research Foundation of Korea (NRF2012R1A2A1A01008797) and the Key Research Institute Program (NRF20100020209). Publisher Copyright: {\textcopyright} 2017 The Royal Society of Chemistry.",

year = "2017",

doi = "10.1039/c7tc00706j",

language = "English",

volume = "5",

pages = "7182--7190",

journal = "Journal of Materials Chemistry C",

issn = "2050-7526",

publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - A new n-type semiconducting molecule with an asymmetric indenothiophene core for a high-performing non-fullerene type organic solar cell

AU - Un Kim, Young

AU - Eun Park, Gi

AU - Choi, Suna

AU - Hee Lee, Dae

AU - Ju Cho, Min

AU - Choi, Dong Hoon

N1 - Funding Information: The authors acknowledge the financial support received from the National Research Foundation of Korea (NRF2012R1A2A1A01008797) and the Key Research Institute Program (NRF20100020209). Publisher Copyright: © 2017 The Royal Society of Chemistry.

PY - 2017

Y1 - 2017

N2 - Herein, a new asymmetric n-type semiconducting molecule (PhITBD) with an indenothiophene core was designed, synthesized using tethering 2-(benzo[c][1,2,5]-thiadiazol-4-ylmethylene)-malononitrile (BM) as terminal groups, and applied to polymer solar cells (PSCs). The PSCs with asymmetric PhITBD displayed improved power conversion efficiencies (PCE) of 6.57% as compared to those with the symmetric molecule IDT-2BM. The higher PCE value of the PhITBD-based PSC was mainly attributed to the enhanced photovoltaic properties, the Voc, Jsc, FF induced by complementary light absorption (550-600 nm range), morphological improvement, and balanced charge carrier transport in the active layer. Due to the effective morphological control and absorption enhancement, asymmetric structured n-type-conjugated molecules are potential candidates for improving the performance of bulk heterojunction non-fullerene type PSCs.

AB - Herein, a new asymmetric n-type semiconducting molecule (PhITBD) with an indenothiophene core was designed, synthesized using tethering 2-(benzo[c][1,2,5]-thiadiazol-4-ylmethylene)-malononitrile (BM) as terminal groups, and applied to polymer solar cells (PSCs). The PSCs with asymmetric PhITBD displayed improved power conversion efficiencies (PCE) of 6.57% as compared to those with the symmetric molecule IDT-2BM. The higher PCE value of the PhITBD-based PSC was mainly attributed to the enhanced photovoltaic properties, the Voc, Jsc, FF induced by complementary light absorption (550-600 nm range), morphological improvement, and balanced charge carrier transport in the active layer. Due to the effective morphological control and absorption enhancement, asymmetric structured n-type-conjugated molecules are potential candidates for improving the performance of bulk heterojunction non-fullerene type PSCs.

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U2 - 10.1039/c7tc00706j

DO - 10.1039/c7tc00706j

M3 - Article

AN - SCOPUS:85026442739

SN - 2050-7526

VL - 5

SP - 7182

EP - 7190

JO - Journal of Materials Chemistry C

JF - Journal of Materials Chemistry C

IS - 29

ER -

A new n-type semiconducting molecule with an asymmetric indenothiophene core for a high-performing non-fullerene type organic solar cell

Abstract

ASJC Scopus subject areas

UN SDGs

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